VERTICAL SYSTEMS Flashcards
0
Q
What is the difference between 1:20, 1:15, 1:12, and 1:8?
A
Ramp slopes. 1:20 is not a ramp. 1:15 requires a handrail. 1:12 maximum slope for persons with disabilities. 1:8 maximum slope permitted by building code.
1
Q
Riser + Tread =
Rise x Tread =
2 Risers + Tread =
A
17 to 17.5 inches
70 to 75 inches
24 to 25 inches
2
Q
Maximum rise for a hydraulic elevator.
A
About five floors
3
Q
In an elevator, what is the governor?
A
Measures and limits elevator speed
4
Q
What is a rule of thumb for the rated elevator speech?
A
1.6 the rise in feet, + 350.
5
Q
Width of a regular passenger elevator door
A
3’-6”
